15,522 reputation
23993
bio website sites.google.com/site/…
location University of Copenhagen
age 29
visits member for 5 years, 5 months
seen 8 hours ago

Mar
22
revised Are there any natural differential operators besides $d$?
deleted 1 character in body
Mar
22
comment Advantages of intersection theory on stacks
An "intersection theory" defined for stacks that didn't reduce to the usual notion of "intersection theory" when the stack happens to be a scheme would be pretty useless.
Mar
16
awarded  Nice Answer
Mar
16
answered Should the Grothendieck ring of varieties be K_0 of numerical motives?
Mar
14
answered Parodies of abstruse mathematical writing
Mar
13
awarded  Popular Question
Mar
12
comment What's the analogue of a Young symmetrizer in the Brauer algebra?
Dear Darij, dear Martin: thanks for the pointers! It'll take me a few days to say whether they answer my question.
Mar
12
asked What's the analogue of a Young symmetrizer in the Brauer algebra?
Mar
11
awarded  Popular Question
Mar
11
answered Definition of an E-infinity algebra
Feb
26
comment Is there an analogue of the Tate (and Hodge) conjecture for varieties that are not proper smooth (i.e., the mixed case)?
I think this can be found in a book by Lewis, "A survey of the Hodge conjecture". I don't know how it relates to the formulation in terms of motivic cohomology.
Feb
26
answered Is there an analogue of the Tate (and Hodge) conjecture for varieties that are not proper smooth (i.e., the mixed case)?
Feb
22
reviewed Leave Open Property theories
Feb
16
reviewed Leave Open A specific Model of ZFC
Feb
16
reviewed Leave Open Symmetric L-groups of integral group ring of finite cyclic groups
Feb
12
awarded  Nice Question
Feb
8
comment A Dold-Thom style construction of a cohomology class from a sphere bundle
For your first and easiest question regarding the case $n=0$: the 0th fibered power of $X$ over $Y$ is just equal to $Y$.
Feb
1
comment Surveys of the items of Erdős' “toolbox”
I'm surprised that no one has mentioned the probabilistic method. en.wikipedia.org/wiki/Probabilistic_method
Feb
1
revised What is a Frobenioid?
added top level tags
Jan
30
reviewed Reopen Limiting Ratio of Solutions to Ordinary Differential Equations